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Secunia Research: DVR Remote ActiveX Control DVRobot Library Loading Vulnerability

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                     Secunia Research 17/11/2011

 - DVR Remote ActiveX Control DVRobot Library Loading Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9

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1) Affected Software 

* DVR Remote ActiveX Control (DVRemoteAx.ax) version 2.1.0.39.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in DVR Remote ActiveX 
Control, which can be exploited by malicious people to compromise a 
user's system.

The vulnerability is caused by the ActiveX control during 
instantiation automatically downloading and loading DVRobot.dll from 
the "manifest" folder of the web server invoking the ActiveX control.

Successful exploitation allows execution of arbitrary code via a 
specially crafted web page and hosted DVRobot.dll file.

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4) Solution 

Set the kill-bit for the ActiveX control.

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5) Time Table 

24/10/2011 - Security contact requested.
08/11/2011 - 2nd attempt at contacting vendor.
17/11/2011 - Public disclosure.

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6) Credits 

Discovered by Carsten Eiram, Secunia Research.

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2011-3828 for the vulnerability.

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8) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

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http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
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Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

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9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2011-80/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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